import axios from 'axios';
import Vue from 'vue'
import Vant from 'vant'
import 'vant/lib/index.css'
import {
    Toast
} from 'vant';
import store from '@/store/index'
Vue.use(Toast);
axios.defaults.timeout = 5000;
axios.defaults.baseURL = 'http://ttapi.research.itcast.cn/'; //填写域名

//http request 拦截器
axios.interceptors.request.use(
    config => {
        const {
            user
        } = store.state
        config.data = JSON.stringify(config.data);
        config.headers = {
            'Content-Type': 'application/json'
        }
        if (user && user.token) {
            config.headers.Authorization = `Bearer ${user.token}`
        } //设置请求头  将token使用请求拦截器统一添加
        return config;
    },
    error => {
        return Promise.reject(err);
    }
);

//响应拦截器即异常处理
axios.interceptors.response.use(response => {
    return response
}, err => {
    if (err && err.response) {
        switch (err.response.status) {
            case 400:
                Toast.fail('账号或验证码错误')
                break;
            case 401:
                Toast.fail('未授权，请重新登录')
                window.location.href="/login"
                break;
            case 403:
                Toast.fail('拒绝访问')
                break;
            case 404:
                Toast.fail('请求错误,未找到该资源')
                break;
            case 405:
                Toast.fail('请求方法未允许')
                break;
            case 408:
                Toast.fail('请求超时')
                break;
            case 500:
                Toast.fail('服务器端出错')
                break;
            case 501:
                Toast.fail('网络未实现')
                break;
            case 502:
                Toast.fail('网络错误')
                break;
            case 503:
                Toast.fail('服务不可用')
                break;
            case 504:
                Toast.fail('网络超时')
                break;
            case 505:
                Toast.fail('http版本不支持该请求')
                break;
            default:
                Toast.fail(`连接错误${err.response.status}`)
        }
    } else {
        Toast.fail('连接到服务器失败')
    }
    return Promise.resolve(err.response)
})


/**
 * 封装get方法
 * @param url
 * @param data
 * @returns {Promise}
 */

export function fetch(url, params = {}) {
    return new Promise((resolve, reject) => {
        axios.get(url, {
                params: params
            })
            .then(response => {
                resolve(response.data);
            })
            .catch(err => {
                reject(err)
            })
    })
}


/**
 * 封装post请求
 * @param url
 * @param data
 * @returns {Promise}
 */

export function post(url, data = {}) {
    return new Promise((resolve, reject) => {
        axios.post(url, data)
            .then(response => {
                resolve(response.data);
            }, err => {
                reject(err)
            })
    })
}

/**
 * 封装patch请求
 * @param url
 * @param data
 * @returns {Promise}
 */

export function patch(url, data = {}) {
    return new Promise((resolve, reject) => {
        axios.patch(url, data)
            .then(response => {
                resolve(response.data);
            }, err => {
                reject(err)
            })
    })
}

/**
 * 封装put请求
 * @param url
 * @param data
 * @returns {Promise}
 */

export function put(url, data = {}) {
    return new Promise((resolve, reject) => {
        axios.put(url, data)
            .then(response => {
                resolve(response.data);
            }, err => {
                reject(err)
            })
    })
}